I understand there is some ill-feeling and a lot of people outside of Liverpool don't get that; I do, but booing one of your own players is not for me."
After Andy Robertson voiced his support for Alexander-Arnold after the game, Carragher added: "I think teammates in a dressing room would normally rally around you 99 percent of the time.
You feel like supporters fall for it like these players love us and then they move on.
"There's a lot of emotion around it," Robertson told Sky Sports.
"I think it's crucial in these moments that I don't tell you how to feel and you don't tell me how to feel — but I can tell you how I feel, and that's disappointed to lose my best mate in the game.
"We've done it all together.
But I can tell you how I feel about it: I'm extremely proud of him and what he's done for this club.
"I love him as a friend, and I love him as a player, and he'll be missed as one of my best friends in the game
That's how I feel about it and I'm not going to tell anyone else how to feel about it."
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